package com.dsbj.mp.icardservice.utils.encrypt.md5;

import java.security.MessageDigest;

public class MD5 {

	/***
	 * MD5签名 生成32位md5签名
	 * 
	 * @param inStr 待签名字符串
	 * @return 返回32位md5码
	 */
	public static String md5Encode(String inStr) throws Exception {
		MessageDigest md5 = null;

		md5 = MessageDigest.getInstance("MD5");

		byte[] byteArray = inStr.getBytes("UTF-8");
		byte[] md5Bytes = md5.digest(byteArray);
		StringBuffer hexValue = new StringBuffer();

		for (int i = 0; i < md5Bytes.length; i++) {
			int val = ((int) md5Bytes[i]) & 0xff;
			if (val < 16) {
				hexValue.append("0");
			}
			hexValue.append(Integer.toHexString(val));
		}
		return hexValue.toString();
	}

	/**
	 * 测试主函数
	 * 
	 * @param args
	 * @throws Exception
	 */
	public static void main(String args[]) throws Exception {
		String str = "渔歌互答，此乐何极。。渔歌互答，此乐何极。。渔歌互答，此乐何极。。渔歌互答，此乐何极。。";
		System.out.println("原始：" + str);
		System.out.println("MD5后：" + md5Encode(str));
	}

}
